US20110117513A1 - Device for the thermal treatment of workpieces - Google Patents

Device for the thermal treatment of workpieces Download PDF

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Publication number
US20110117513A1
US20110117513A1 US13/003,910 US200913003910A US2011117513A1 US 20110117513 A1 US20110117513 A1 US 20110117513A1 US 200913003910 A US200913003910 A US 200913003910A US 2011117513 A1 US2011117513 A1 US 2011117513A1
Authority
US
United States
Prior art keywords
pipe sections
workpieces
process chamber
heating
cooling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/003,910
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English (en)
Inventor
Richard Kressmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ersa GmbH
Original Assignee
Ersa GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ersa GmbH filed Critical Ersa GmbH
Assigned to ERSA GMBH reassignment ERSA GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KRESSMANN, RICHARD
Publication of US20110117513A1 publication Critical patent/US20110117513A1/en
Abandoned legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/3494—Heating methods for reflowing of solder
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/07—Treatments involving liquids, e.g. plating, rinsing
    • H05K2203/0736—Methods for applying liquids, e.g. spraying
    • H05K2203/0746—Local treatment using a fluid jet, e.g. for removing or cleaning material; Providing mechanical pressure using a fluid jet
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/08—Treatments involving gases
    • H05K2203/081—Blowing of gas, e.g. for cooling or for providing heat during solder reflowing

Definitions

  • the present invention relates to a device for the thermal treatment of workpieces according to the preamble of patent claim 1 .
  • blower motors of such convection modules are rpm(revolutions per minute)-regulated in order to be able to control the heat transfer rates.
  • the generation of the air flow using blowers can be considered as constituting a highly complex technique, wherein in particular in the case of high flow rates a drawback is encountered with respect to the efficiency of such systems.
  • Further heating modules for soldering installations known from the state of the art feature medium-wave to long-wave infrared emitters. Said preheating modules heat the components by means of radiation heat transfer. A drawback of such heating cassettes resides in the efficiency of the energy transfer.
  • document DE 202 03 599 U1 discloses a device for reflow soldering, wherein the component assembly to be soldered is transported along a transport plane through a heating zone. Above the transport plane, a nozzle is provided which has a slot-shaped nozzle opening and a slot-shaped channel cross-section which essentially corresponds to the width of the component assembly.
  • the process gas jet is widened via a deflector surface which lies at a distance from the nozzle opening.
  • the process gas serves for supplying the component with the necessary amount of heat. This measure is afflicted with the disadvantage that it is necessary to introduce a very large amount of process gas into the process chamber.
  • this object is realized by a device according to the teaching of patent claim 1 .
  • Preferred embodiments of the invention are the subject-matter of the subclaims.
  • the device for the thermal treatment of workpieces comprises a process chamber in which there is formed or arranged at least one heating zone or cooling zone which has a heating device or a cooling device.
  • a heating zone or cooling zone which has a heating device or a cooling device.
  • Such devices preferably feature a modular configuration, wherein the cooling modules and heating modules can be disposed in succession. In this way, a component which is transported along the different cooling zones or heating zones can be correspondingly heated or cooled. The temperature prevailing in the different modules is measured using temperature sensors or pyrometers, and can then be controlled.
  • the inflow openings are arranged at least at one pipe section which is connected to a pressurized fluid source.
  • the inflow openings may be formed in the shape of a nozzle and may generate the type of flow corresponding to their openings. Provision is exemplarily made for subjecting the fluid source to pressure using a compressor or a pressurized gas bottle or else for connecting the fluid source to an available compressed air network.
  • the hollow chamber may be arranged at any arbitrary position in the process chamber such that the fluid can be supplied to virtually all optional positions in the process chamber via the inflow openings in the wall or in the walls of the hollow chamber.
  • the arrangement of the pipe sections is basically optional and is essentially contingent upon the position of the process chamber to which the fluid to be introduced shall be transported.
  • a plurality of pipe sections arranged in the process chamber are provided, which extend substantially in parallel to the transporting section.
  • the pipe sections can be arranged in succession and/or side by side.
  • the transported workpieces can be supplied with a different type of gas from different pipe sections, for example in different regions of the process chamber.
  • the inflow openings for instance may be arranged side by side or else may be offset at an angle with respect to one another.
  • a more comprehensive flow characteristic can be realized, which makes it possible to reach large parts of the process chamber by means of a greater flow of the gas volume.
  • the distance between respectively adjacent pipe sections is 10 mm and 100 mm, wherein on the one hand, a sufficiently large gas volume flow can be generated, and at the same time, a sufficient amount of radiation heat is allowed to be emitted between the pipe sections.
  • the pipe sections for instance are arranged in parallel.
  • the distance of the pipe sections from the workpieces to be thermally treated preferably is between 20 mm and 50 mm.
  • This can be realized for instance using a manually-actuated or motor-driven adjustment device which can additionally be controlled or regulated as a function of process parameters, such as the temperature of the atmosphere prevailing in the process chamber or the like.
  • the diameter of the inflow openings shall be set in particular in consideration of the trajectory path, the gas pressure and the distance of the inflow openings to one another.
  • the diameter is between 2 mm and 0.01 mm, in particular between 0.5 mm and 0.05 mm.
  • the inflowing gas is capable of carrying along the ambient atmosphere in the process chamber and, as a result, can cause a relatively large gas flow to the workpieces.
  • the suggested small diameters make it possible for the inflowing gas to reach high flow rates subject to reduced gas consumption.
  • the gas flow does not introduce any amount of heat into the chamber, but rather only supports the heat transfer from the heated process gas atmosphere prevailing in the process chamber to the workpiece.
  • a convective heat transfer can be carried out in addition to the radiation heat transfer.
  • the distance between respectively adjacent inflow openings is preferably between 5 mm and 100 mm.
  • the heating device or the cooling device has at least one panel heating element or panel cooling element, wherein the pipe sections are arranged between the workpiece and the panel heating element or the panel cooling element.
  • a wall region of the process chamber may also serve as the panel heating element and is correspondingly heated from the outside or else has an infrared heating element.
  • the heating device or the cooling device features at least one rod-shaped or tubular heating element or cooling element.
  • these elements may be pipes having superheated steam, hot water or a cooling medium flowing through them.
  • the heating elements or the cooling elements may be arranged between the pipe sections, between the pipe sections and the workpieces to be treated or else between the pipe sections and a wall of the process chamber.
  • FIG. 1 shows a process chamber having pipe sections arranged above and below and arranged side by side, and having heating elements or cooling elements;
  • FIG. 2 shows a process chamber having pipe sections arranged above and below and arranged side by side, and having heating elements or cooling elements disposed at a variable distance to the transport plane;
  • FIG. 3 shows a process chamber having pipe sections arranged above and below and arranged side by side, and having heating elements or cooling elements, wherein the heating elements are partially screened with the aid of a reflector element.
  • FIG. 4 shows a process chamber having a panel heating element in which several inflow openings are provided
  • FIG. 5 shows a cut through a pipe section with two inflow openings
  • FIG. 6 shows a cut through a pipe section with one inflow opening
  • FIG. 7 shows a module with a register composed of pipe sections and a heating device or a cooling device
  • FIG. 8 shows a sectional view of the arrangement of a register composed of pipe sections and heating elements or cooling elements of the module illustrated in FIG. 7 ;
  • FIG. 9 shows the arrangement of the pipe sections in the direction of the transporting section
  • FIG. 11 shows the arrangement of several pipe registers and heating elements or cooling elements along a transporting section.
  • the process chamber 1 illustrated in FIG. 1 is centrally traversed by a transporting unit 2 , which enters into the process chamber 1 via a first chamber opening 3 until the transporting unit 2 exits the process chamber via the second chamber opening 4 .
  • pipe sections 5 from which a gas flow 6 flows to the chamber axis, are respectively provided above and below so as to be opposed to one another.
  • the alternate arrangement of heat-emitting elements 7 and pipe sections 5 enhances the efficiency of the heat transfer to a component. This component is transported along the transporting section through the process chamber 1 using the transporting unit 2 and in addition is heated by the gas flow 6 , which has been heated through contact with the heat-emitting elements 7 or the surfaces heated by the same within the process chamber.
  • FIG. 2 renders apparent the variable arrangement of the heating elements 7 and the inflow openings 5 with respect to the transporting section of the transporting unit 2 .
  • a process chamber 1 is moved by a transporting unit 2 from a first chamber opening 3 to a second chamber opening 4 , wherein in a first section, the inflow openings 5 and the heating elements 7 are arranged in a first position 9 which lies closer to the transporting section, and in another section, the inflow openings 5 and the heating elements 7 are arranged in a second position 10 which is situated at a greater distance relative to the transporting section.
  • the lateral distance of the heating elements 7 and the pipe sections 5 is also variable, since the distance between two pipe sections 5 has a first width 11 and a second width 12 .
  • FIG. 4 shows another option for heating the gas flow 6 with a variation of the flow.
  • a panel heating element 14 is disposed at the process chamber 1 in parallel to the direction of the transporting section of the transporting unit 2 at the walls of the process chamber 1 , said panel heating element 14 uniformly emitting the heat radiation into the process chamber 1 .
  • the inflow openings 5 are provided ahead of the panel heating element 14 in order to move the amount of heat emitted by the panel heating element 14 to the transporting unit 2 .
  • the jet of gas 6 flowing from the pipe sections 5 is divided into a first partial jet 15 and a second partial jet 16 , whereby a broader distribution of the gas flow and thus an enlarged volume flow can be realized.
  • FIG. 5 shows a cut through a pipe section 5 having an inflow opening 18 and an adjacently arranged further inflow opening 19 .
  • the gas flow is divided into a first partial jet 15 and a second partial jet 16 .
  • This configuration of a divided process gas jet for instance is also indicated in FIG. 4 .
  • the outer diameter 20 and the inner diameter 21 represent unambiguous parameters for the pipe section, since with these parameters, in the case of a fixedly set gas pressure, the flow rate or the type of flow can be manipulated.
  • FIG. 6 shows a cut through a pipe section 5 having only one inflow opening 18 , which generates only a first partial jet 17 . This is advantageous in particular for flows to be generated at specific locations.
  • FIG. 7 shows an inventive module, wherein a pressurized fluid source 22 is connected to a pipe register which is composed of five pipe sections 2 . A gaseous fluid flows out of each pipe section 5 . Besides, a heating coil is illustrated as the heating element 7 and essentially extends over the surface of the pipe register. The illustrated pressurized fluid source 22 makes it possible in the module to realize a uniform distribution of the gas pressure in the different pipe sections 5 .
  • FIG. 8 shows a cut through the module illustrated in FIG. 7 , wherein a first partial jet 15 and a second partial jet 16 flow out of the pipe sections 5 and are heated by the heat emitted by the heating elements 7 .
  • reflector elements 13 are provided, which serve for moving the heat efficiently to the pipe sections 5 .
  • FIGS. 9 and 10 show the arrangement of the pipe sections 5 with respect to the direction of the transporting section 23 of the transporting unit 2 .
  • FIG. 9 correspondingly shows the arrangement of the pipe sections 5 in parallel to the direction of the transporting section 23 of the transporting unit 2 .
  • the arrangement of the inflow openings 5 is correspondingly illustrated at a right angle transverse to the direction of the transporting section 23 .
  • FIG. 11 shows the design of a soldering device having several heating modules or cooling modules arranged side by side, as described in FIG. 7 .
  • a process chamber 1 is composed of eight modules which each feature a register composed of pipe sections 5 and a heating element 7 in the form of a heating coil. These modules can be connected to a pressurized fluid source via a connecting element 24 and can be connected to a heating device via a connector 25 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Furnace Details (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)
  • Tunnel Furnaces (AREA)
US13/003,910 2008-07-15 2009-05-18 Device for the thermal treatment of workpieces Abandoned US20110117513A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE102008033225.9 2008-07-15
DE102008033225A DE102008033225B3 (de) 2008-07-15 2008-07-15 Vorrichtung zur thermischen Behandlung von Werkstücken
DE202008011595.7 2008-09-01
DE202008011595U DE202008011595U1 (de) 2008-07-15 2008-09-01 Vorrichtung zur thermischen Behandlung von Werkstücken
PCT/DE2009/000675 WO2010006568A1 (de) 2008-07-15 2009-05-18 Vorrichtung zur thermischen behandlung von werkstücken

Publications (1)

Publication Number Publication Date
US20110117513A1 true US20110117513A1 (en) 2011-05-19

Family

ID=39942628

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/003,910 Abandoned US20110117513A1 (en) 2008-07-15 2009-05-18 Device for the thermal treatment of workpieces

Country Status (13)

Country Link
US (1) US20110117513A1 (de)
EP (1) EP2301311A1 (de)
JP (1) JP2011528171A (de)
KR (1) KR20110053403A (de)
CN (1) CN102090157A (de)
AU (1) AU2009270670A1 (de)
CA (1) CA2725766A1 (de)
DE (2) DE102008033225B3 (de)
EA (1) EA201100123A1 (de)
IL (1) IL210507A0 (de)
MX (1) MX2011000253A (de)
UA (1) UA100577C2 (de)
WO (1) WO2010006568A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103791726A (zh) * 2014-02-26 2014-05-14 江苏恒耐炉料集团有限公司 节能的水泥窑篦冷机矮墙结构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2621481T3 (es) * 2011-10-25 2017-07-04 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Método y dispositivo para enfriar tarjetas de circuito impreso soldadas
DE102013208127A1 (de) * 2013-05-03 2014-11-06 Homag Holzbearbeitungssysteme Gmbh Heißgaserzeugungseinrichtung

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4771929A (en) * 1987-02-20 1988-09-20 Hollis Automation, Inc. Focused convection reflow soldering method and apparatus
US4792302A (en) * 1987-11-03 1988-12-20 Dynapert-Htc Corporation Continuous solder reflow system
US5039841A (en) * 1987-09-11 1991-08-13 Senju Metal Industry Co., Ltd. Reflow furnace
US5230460A (en) * 1990-06-13 1993-07-27 Electrovert Ltd. High volume convection preheater for wave soldering
US5573174A (en) * 1994-08-15 1996-11-12 Pekol; Robert Automatic reflow soldering system
US5770835A (en) * 1993-10-25 1998-06-23 Fujitsu Limited Process and apparatus and panel heater for soldering electronic components to printed circuit board
US6145734A (en) * 1996-04-16 2000-11-14 Matsushita Electric Industrial Co., Ltd. Reflow method and reflow device
US20010037568A1 (en) * 2000-03-31 2001-11-08 Uner Jason R. Systems and methods for application of substantially dry atmospheric plasma surface treatment to various electronic component packaging and assembly methods
US6386422B1 (en) * 2001-05-03 2002-05-14 Asm Assembly Automation Limited Solder reflow oven
US6642485B2 (en) * 2001-12-03 2003-11-04 Visteon Global Technologies, Inc. System and method for mounting electronic components onto flexible substrates
US6768083B2 (en) * 2002-09-19 2004-07-27 Speedline Technologies, Inc. Reflow soldering apparatus and method for selective infrared heating
US20070042310A1 (en) * 2005-06-15 2007-02-22 Daniel Clark Method and apparatus for the treatment of a component

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH021561U (de) * 1988-06-16 1990-01-08
JP3445356B2 (ja) * 1994-06-03 2003-09-08 株式会社タムラ製作所 はんだ付け基板の冷却装置
JP2002009430A (ja) * 2000-06-19 2002-01-11 Nihon Dennetsu Keiki Co Ltd リフローはんだ付け方法およびリフローはんだ付け装置
JP2002016352A (ja) * 2000-06-29 2002-01-18 Matsushita Electric Ind Co Ltd リフロー基板加熱方法とその装置
DE20203599U1 (de) * 2002-03-06 2003-03-06 Rehm Anlagenbau Gmbh Vorrichtung zum Reflowlöten
JP4186635B2 (ja) * 2003-01-30 2008-11-26 ソニー株式会社 はんだ冷却方法、はんだ冷却装置、及びはんだリフロー装置

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4771929A (en) * 1987-02-20 1988-09-20 Hollis Automation, Inc. Focused convection reflow soldering method and apparatus
US5039841A (en) * 1987-09-11 1991-08-13 Senju Metal Industry Co., Ltd. Reflow furnace
US4792302A (en) * 1987-11-03 1988-12-20 Dynapert-Htc Corporation Continuous solder reflow system
US5230460A (en) * 1990-06-13 1993-07-27 Electrovert Ltd. High volume convection preheater for wave soldering
US5770835A (en) * 1993-10-25 1998-06-23 Fujitsu Limited Process and apparatus and panel heater for soldering electronic components to printed circuit board
US5573174A (en) * 1994-08-15 1996-11-12 Pekol; Robert Automatic reflow soldering system
US6145734A (en) * 1996-04-16 2000-11-14 Matsushita Electric Industrial Co., Ltd. Reflow method and reflow device
US20010037568A1 (en) * 2000-03-31 2001-11-08 Uner Jason R. Systems and methods for application of substantially dry atmospheric plasma surface treatment to various electronic component packaging and assembly methods
US6386422B1 (en) * 2001-05-03 2002-05-14 Asm Assembly Automation Limited Solder reflow oven
US6642485B2 (en) * 2001-12-03 2003-11-04 Visteon Global Technologies, Inc. System and method for mounting electronic components onto flexible substrates
US6768083B2 (en) * 2002-09-19 2004-07-27 Speedline Technologies, Inc. Reflow soldering apparatus and method for selective infrared heating
US20070042310A1 (en) * 2005-06-15 2007-02-22 Daniel Clark Method and apparatus for the treatment of a component

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103791726A (zh) * 2014-02-26 2014-05-14 江苏恒耐炉料集团有限公司 节能的水泥窑篦冷机矮墙结构

Also Published As

Publication number Publication date
EP2301311A1 (de) 2011-03-30
CN102090157A (zh) 2011-06-08
EA201100123A1 (ru) 2011-08-30
MX2011000253A (es) 2011-05-02
UA100577C2 (ru) 2013-01-10
KR20110053403A (ko) 2011-05-23
AU2009270670A1 (en) 2010-01-21
CA2725766A1 (en) 2010-01-21
IL210507A0 (en) 2011-03-31
DE102008033225B3 (de) 2009-12-17
DE202008011595U1 (de) 2008-11-06
WO2010006568A1 (de) 2010-01-21
JP2011528171A (ja) 2011-11-10

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AS Assignment

Owner name: ERSA GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KRESSMANN, RICHARD;REEL/FRAME:025737/0681

Effective date: 20101207

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION